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<head><meta charset="utf-8"><title>weekly meeting 2019-07-11 #54818 · t-compiler · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/index.html">t-compiler</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html">weekly meeting 2019-07-11 #54818</a></h3>

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<a name="170628248"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170628248" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170628248">(Jul 11 2019 at 12:37)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> ; the triage meeting will be starting in 1 hours 23 minutes</p>



<a name="170628331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170628331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170628331">(Jul 11 2019 at 12:38)</a>:</h4>
<p>I will be doing <a href="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-11.20.2354818/near/170628267" title="#narrow/stream/131828-t-compiler/topic/pre-meeting.20triage.202019-07-11.20.2354818/near/170628267">pre-triage in a parallel topic</a></p>



<a name="170628425"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170628425" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170628425">(Jul 11 2019 at 12:39)</a>:</h4>
<p>are either of <span class="user-mention" data-user-id="116015">@Alex Crichton</span> or <span class="user-mention" data-user-id="120989">@nnethercote</span> around? I was wondering if we might get a check-in from WG-pipelining today</p>



<a name="170635558"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635558" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635558">(Jul 11 2019 at 14:01)</a>:</h4>
<p>Hi <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> , lets get this meeting started!</p>



<a name="170635576"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635576" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635576">(Jul 11 2019 at 14:01)</a>:</h4>
<p>first up, lets see if there are any announcements.</p>



<a name="170635641"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635641" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635641">(Jul 11 2019 at 14:02)</a>:</h4>
<p>I'll start: this was already discussed in last Friday's meeting, but just so everyone knows: I'm going on parental leave for 8 weeks, starting this coming monday</p>



<a name="170635655"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635655" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635655">(Jul 11 2019 at 14:02)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> and <span class="user-mention" data-user-id="123586">@nagisa</span> will be running the meetings (or delegating thereof) in my absence.</p>



<a name="170635839"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635839" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635839">(Jul 11 2019 at 14:05)</a>:</h4>
<p>I'm around now!</p>



<a name="170635920"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635920" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635920">(Jul 11 2019 at 14:06)</a>:</h4>
<p><span aria-label="wave" class="emoji emoji-1f44b" role="img" title="wave">:wave:</span></p>



<a name="170635938"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635938" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635938">(Jul 11 2019 at 14:06)</a>:</h4>
<p><span class="user-mention" data-user-id="116015">@Alex Crichton</span> great! would you be prepared to give a WG-pipelining check in in say ... 40 minutes?</p>



<a name="170635966"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635966" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635966">(Jul 11 2019 at 14:06)</a>:</h4>
<p><span class="user-mention" data-user-id="116015">@Alex Crichton</span> if you're not available then and are in fact ready now, we could do the checkin first, before the triage stuff</p>



<a name="170635982"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635982" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635982">(Jul 11 2019 at 14:07)</a>:</h4>
<p>sure! I can check in whenever</p>



<a name="170635987"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170635987" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170635987">(Jul 11 2019 at 14:07)</a>:</h4>
<p>but if you'd prefer time to prepare (by which I mean get jazzed up on some coffee), we can keep it at the end of the meeting</p>



<a name="170636016"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636016" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636016">(Jul 11 2019 at 14:07)</a>:</h4>
<p>okay then lets aim to hear from alex in about 38 minutes</p>



<a name="170636080"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636080" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636080">(Jul 11 2019 at 14:08)</a>:</h4>
<p>a follow-up announcement: <span class="user-mention" data-user-id="116009">@nikomatsakis</span> do you want to mention your own PTO ?</p>



<a name="170636094"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636094" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636094">(Jul 11 2019 at 14:08)</a>:</h4>
<p>(again, I know we covered this on friday, but I don't want to assume everyone here was there)</p>



<a name="170636132"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636132" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636132">(Jul 11 2019 at 14:09)</a>:</h4>
<p>Sure! As I do most years, I'm going to be on PTO for roughly the next 4 weeks. I expect to announce a more detailed schedule, since I will likely be spending some days checking in and keeping track of things.</p>



<a name="170636166"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636166" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636166">(Jul 11 2019 at 14:09)</a>:</h4>
<p>(But probably less than most years, where I've often done like 50% time.)</p>



<a name="170636184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636184">(Jul 11 2019 at 14:10)</a>:</h4>
<p>I guess most likely I would be around for some parts of the week of July 22</p>



<a name="170636266"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636266" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636266">(Jul 11 2019 at 14:10)</a>:</h4>
<p>And I think I would be happy to commit to running the meeting that week, but <span class="user-mention" data-user-id="123586">@nagisa</span> let's talk in a separate topic I guess</p>



<a name="170636294"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636294" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636294">(Jul 11 2019 at 14:10)</a>:</h4>
<p>ACK</p>



<a name="170636305"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636305" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636305">(Jul 11 2019 at 14:11)</a>:</h4>
<p>okay, so lets get to the standing agenda stuff</p>



<a name="170636344"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636344" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636344">(Jul 11 2019 at 14:11)</a>:</h4>
<p>there are five <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+is%3Aissue+label%3AT-compiler+label%3AP-high+no%3Aassignee">P-high unassigned T-compiler issues</a></p>



<a name="170636364"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636364" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636364">(Jul 11 2019 at 14:11)</a>:</h4>
<p>two of them are regressions of some kind</p>



<a name="170636442"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636442" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636442">(Jul 11 2019 at 14:12)</a>:</h4>
<p>though the two regressions, <a href="https://github.com/rust-lang/rust/issues/62546" target="_blank" title="https://github.com/rust-lang/rust/issues/62546">#62546</a> and <a href="https://github.com/rust-lang/rust/issues/61560" target="_blank" title="https://github.com/rust-lang/rust/issues/61560">#61560</a>, are P-high only in the sense that I/we want someone to go in and double check that things aren't actually horribly broken</p>



<a name="170636465"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636465" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636465">(Jul 11 2019 at 14:12)</a>:</h4>
<p>I would assign these to myself, but, see above announcement about going on leave.</p>



<a name="170636539"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636539" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636539">(Jul 11 2019 at 14:13)</a>:</h4>
<p>anyway, if no one self-assigns these, I'll probably hand out auto-assignments tomorrow as one of my parting blows</p>



<a name="170636564"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636564" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636564">(Jul 11 2019 at 14:14)</a>:</h4>
<p>I think <span class="user-mention" data-user-id="119031">@Esteban Küber</span> might be a good candidate to investigate <a href="https://github.com/rust-lang/rust/issues/62546" target="_blank" title="https://github.com/rust-lang/rust/issues/62546">#62546</a></p>



<a name="170636630"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636630" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636630">(Jul 11 2019 at 14:14)</a>:</h4>
<p>Since they do a lot of work around parse errors and recovery</p>



<a name="170636652"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636652" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636652">(Jul 11 2019 at 14:14)</a>:</h4>
<p>right</p>



<a name="170636677"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636677" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636677">(Jul 11 2019 at 14:14)</a>:</h4>
<p>okay, we have two <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=label%3Abeta-nominated+label%3AT-compiler">beta-nominations</a></p>



<a name="170636709"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636709" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636709">(Jul 11 2019 at 14:14)</a>:</h4>
<p>first beta-nom: "Raise the default recursion limit to 128" <a href="https://github.com/rust-lang/rust/issues/62450" target="_blank" title="https://github.com/rust-lang/rust/issues/62450">#62450</a></p>



<a name="170636815"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636815" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636815">(Jul 11 2019 at 14:15)</a>:</h4>
<p>For this one I <em>believe</em> the regression with rustdoc got to beta via trains, but I never really verified that.</p>



<a name="170636896"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636896" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636896">(Jul 11 2019 at 14:16)</a>:</h4>
<p>Seems pretty harmless.</p>



<a name="170636937"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636937" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636937">(Jul 11 2019 at 14:16)</a>:</h4>
<p>Does anyone want to object to <a href="https://github.com/rust-lang/rust/issues/62450" target="_blank" title="https://github.com/rust-lang/rust/issues/62450">#62450</a> ? I can imagine arguments such as "slippery slope"</p>



<a name="170636950"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636950" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636950">(Jul 11 2019 at 14:16)</a>:</h4>
<p>but mostly I am in camp "harmless"</p>



<a name="170636972"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170636972" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170636972">(Jul 11 2019 at 14:17)</a>:</h4>
<p>There is an objection by IDE folks about compiler needing bounded runtime and whatnot</p>



<a name="170637003"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637003" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637003">(Jul 11 2019 at 14:17)</a>:</h4>
<p>I think that was more of a theoretical point</p>



<a name="170637005"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637005" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637005">(Jul 11 2019 at 14:17)</a>:</h4>
<p>can one override this value via the interface that the IDE uses ?</p>



<a name="170637017"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637017" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637017">(Jul 11 2019 at 14:18)</a>:</h4>
<p>i.e., IDEs will need limits to ensure respnsiveness</p>



<a name="170637056"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637056" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637056">(Jul 11 2019 at 14:18)</a>:</h4>
<p>I say let's revisit "slippery slope" if we come to this point again (i.e. raising to 256)</p>



<a name="170637069"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637069" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637069">(Jul 11 2019 at 14:18)</a>:</h4>
<p>vs an argument against this particular change</p>



<a name="170637115"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637115" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637115">(Jul 11 2019 at 14:18)</a>:</h4>
<p>yeah, I took the IDE point being more in response to the comment "Ideally we wouldn't have such arbitrary limits"</p>



<a name="170637121"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637121" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637121">(Jul 11 2019 at 14:18)</a>:</h4>
<p>as "here is a reason why we need such limits"</p>



<a name="170637139"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637139" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637139">(Jul 11 2019 at 14:18)</a>:</h4>
<p>anyway, looks like we all agree we should accept, at least in this instance.</p>



<a name="170637140"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637140" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637140">(Jul 11 2019 at 14:19)</a>:</h4>
<p>My understanding is that we have these limits due to undecidability?</p>



<a name="170637189"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637189" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637189">(Jul 11 2019 at 14:19)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> (in some cases I think its more that no one wants to bother putting a better check in ?)</p>



<a name="170637279"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637279" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637279">(Jul 11 2019 at 14:20)</a>:</h4>
<p>((but I could be wrong; I'm thinking in some cases of recursive data structures where I was/am pretty sure the matter is decidable but we rely on recursion limits))</p>



<a name="170637288"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637288" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637288">(Jul 11 2019 at 14:20)</a>:</h4>
<p>okay, anyway, next beta nom</p>



<a name="170637313"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637313" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637313">(Jul 11 2019 at 14:20)</a>:</h4>
<p>oh I kept thinking you meant "nom" (the crate) not "nomination"</p>



<a name="170637333"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637333" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637333">(Jul 11 2019 at 14:20)</a>:</h4>
<p>beta nom: "Fix ICEs when <code>Self</code> is used in type aliases" <a href="https://github.com/rust-lang/rust/issues/62417" target="_blank" title="https://github.com/rust-lang/rust/issues/62417">#62417</a></p>



<a name="170637361"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637361" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637361">(Jul 11 2019 at 14:21)</a>:</h4>
<blockquote>
<p>oh I kept thinking you meant "nom" (the crate) not "nomination"</p>
</blockquote>
<p>I could write "nom'" but I bet that would be even more confusing</p>



<a name="170637388"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637388" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637388">(Jul 11 2019 at 14:21)</a>:</h4>
<p>One byte at a time, omnomnom</p>



<a name="170637396"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637396" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637396">(Jul 11 2019 at 14:21)</a>:</h4>
<blockquote>
<p>beta nom: "Fix ICEs when <code>Self</code> is used in type aliases" <a href="https://github.com/rust-lang/rust/issues/62417" target="_blank" title="https://github.com/rust-lang/rust/issues/62417">#62417</a></p>
</blockquote>
<p>this appears to be a reverted commit?</p>



<a name="170637416"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637416" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637416">(Jul 11 2019 at 14:21)</a>:</h4>
<p>what?</p>



<a name="170637420"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637420" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637420">(Jul 11 2019 at 14:22)</a>:</h4>
<p>/me looks</p>



<a name="170637476"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637476" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637476">(Jul 11 2019 at 14:22)</a>:</h4>
<p>sorry, I was referring to <span class="user-mention" data-user-id="124069">@Alexander Regueiro</span>'s comments</p>



<a name="170637491"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637491" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637491">(Jul 11 2019 at 14:22)</a>:</h4>
<p>i.e., the change was kind of reverting some commit that they felt was causing problems?</p>



<a name="170637496"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637496" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637496">(Jul 11 2019 at 14:22)</a>:</h4>
<p>I'm just verifying</p>



<a name="170637511"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637511" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alexander Regueiro <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637511">(Jul 11 2019 at 14:22)</a>:</h4>
<p>yeah, it was more or less a revert</p>



<a name="170637524"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637524" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alexander Regueiro <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637524">(Jul 11 2019 at 14:22)</a>:</h4>
<p>just of a small hunk</p>



<a name="170637531"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637531" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637531">(Jul 11 2019 at 14:22)</a>:</h4>
<p>got it</p>



<a name="170637538"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637538" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637538">(Jul 11 2019 at 14:23)</a>:</h4>
<p>Feels safe to backport</p>



<a name="170637565"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637565" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637565">(Jul 11 2019 at 14:23)</a>:</h4>
<p>okay looks good then, lets backport</p>



<a name="170637602"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637602" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alexander Regueiro <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637602">(Jul 11 2019 at 14:23)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> BTW, think you'll get time to review that PR of mine before you go on hols? specific tips on the coercion code to modify w.r.t. trait upcasting would be great too, if that doesn't distract you too much.</p>



<a name="170637714"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637714" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637714">(Jul 11 2019 at 14:24)</a>:</h4>
<p>we have no stable backport nominations to review</p>



<a name="170637775"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637775" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637775">(Jul 11 2019 at 14:24)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> I believe I nominated one thing for beta backport</p>



<a name="170637782"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637782" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637782">(Jul 11 2019 at 14:25)</a>:</h4>
<p>maybe I messed up :)</p>



<a name="170637805"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637805" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637805">(Jul 11 2019 at 14:25)</a>:</h4>
<p>there are two PR's marking <a href="https://github.com/rust-lang/rust/pulls?q=is%3Aopen+is%3Apr+label%3AS-waiting-on-team+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/pulls?q=is%3Aopen+is%3Apr+label%3AS-waiting-on-team+label%3AT-compiler">S-waiting-on-team</a>, but one of them is the ancient PR <a href="https://github.com/rust-lang/rust/issues/59064" target="_blank" title="https://github.com/rust-lang/rust/issues/59064">#59064</a> from <span class="user-mention" data-user-id="116466">@Zoxc</span> , and the other is I-nominated, so we'll get to it in the nominated issues</p>



<a name="170637813"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637813" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637813">(Jul 11 2019 at 14:25)</a>:</h4>
<p><a href="https://github.com/rust-lang/rust/pull/61853" target="_blank" title="https://github.com/rust-lang/rust/pull/61853">https://github.com/rust-lang/rust/pull/61853</a></p>



<a name="170637833"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637833" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637833">(Jul 11 2019 at 14:25)</a>:</h4>
<p>I think I neglected the T-compiler label</p>



<a name="170637841"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637841" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637841">(Jul 11 2019 at 14:25)</a>:</h4>
<blockquote>
<p>Emit warning when trying to use PGO in conjunction with unwinding on … <a href="https://github.com/rust-lang/rust/issues/61853" target="_blank" title="https://github.com/rust-lang/rust/issues/61853">#61853</a></p>
</blockquote>



<a name="170637862"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637862" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637862">(Jul 11 2019 at 14:25)</a>:</h4>
<p>I was asked if we could backport this by the FF team, since it is blocking their use of PGO</p>



<a name="170637911"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637911" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637911">(Jul 11 2019 at 14:26)</a>:</h4>
<p>It is a pretty mild change (error -&gt; warn)</p>



<a name="170637914"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637914" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637914">(Jul 11 2019 at 14:26)</a>:</h4>
<p>(hmm I must have forgotten to look at all beta-nominations without team labels. I thought I did)</p>



<a name="170637968"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637968" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637968">(Jul 11 2019 at 14:26)</a>:</h4>
<p>hmm</p>



<a name="170637997"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170637997" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170637997">(Jul 11 2019 at 14:27)</a>:</h4>
<p>Feels like a pretty semantic change on the other hand</p>



<a name="170638007"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638007" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638007">(Jul 11 2019 at 14:27)</a>:</h4>
<p>the potential danger seems high, no?</p>



<a name="170638016"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638016" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638016">(Jul 11 2019 at 14:27)</a>:</h4>
<p>how so?</p>



<a name="170638026"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638026" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638026">(Jul 11 2019 at 14:27)</a>:</h4>
<p>"it sometimes does not crash and will probably generate a corrupted binary"</p>



<a name="170638040"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638040" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638040">(Jul 11 2019 at 14:27)</a>:</h4>
<p>these things sound bad to me</p>



<a name="170638041"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638041" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638041">(Jul 11 2019 at 14:27)</a>:</h4>
<p>nothing that works today is affected, obviously.</p>



<a name="170638105"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638105" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638105">(Jul 11 2019 at 14:28)</a>:</h4>
<p>I mean it sounds like you're arguing against the change <em>itself</em></p>



<a name="170638116"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638116" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638116">(Jul 11 2019 at 14:28)</a>:</h4>
<p>(vs the risk of backporting)</p>



<a name="170638124"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638124" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638124">(Jul 11 2019 at 14:28)</a>:</h4>
<p>That's probably true</p>



<a name="170638134"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638134" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638134">(Jul 11 2019 at 14:28)</a>:</h4>
<p>Yeah that's what I'm hearing</p>



<a name="170638136"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638136" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638136">(Jul 11 2019 at 14:28)</a>:</h4>
<p>which is potentially fair, I just want to be clear :)</p>



<a name="170638140"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638140" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638140">(Jul 11 2019 at 14:28)</a>:</h4>
<p>and thinking myself also</p>



<a name="170638161"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638161" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638161">(Jul 11 2019 at 14:28)</a>:</h4>
<p>But if Felix is having doubts about its existence on master it seems bad to backport, no?</p>



<a name="170638163"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638163" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638163">(Jul 11 2019 at 14:28)</a>:</h4>
<p>so if we don't backport</p>



<a name="170638169"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638169" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638169">(Jul 11 2019 at 14:28)</a>:</h4>
<p>that gives us time to debate</p>



<a name="170638184"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638184" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638184">(Jul 11 2019 at 14:29)</a>:</h4>
<p>but I'm going on leave; I'm in no position to support my side of argument</p>



<a name="170638213"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638213" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638213">(Jul 11 2019 at 14:29)</a>:</h4>
<p>I hear that but I think the risk is being overblown, personally. That is, I think that people who are building with PGO may encounter some problems perhaps, but in the meantime we block the feature from being used <em>at all</em></p>



<a name="170638225"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638225" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638225">(Jul 11 2019 at 14:29)</a>:</h4>
<p>Is there a way we could give this to FF but not the world at large?</p>



<a name="170638235"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638235" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638235">(Jul 11 2019 at 14:29)</a>:</h4>
<p>maybe that's the wrong attitude</p>



<a name="170638242"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638242" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638242">(Jul 11 2019 at 14:29)</a>:</h4>
<p>We could stick it in a lint group that is forbid by default, I guess?</p>



<a name="170638248"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638248" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638248">(Jul 11 2019 at 14:29)</a>:</h4>
<p>(That might be hard)</p>



<a name="170638249"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638249" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638249">(Jul 11 2019 at 14:29)</a>:</h4>
<p>Moreover, the people driving PGO is basically FF, so they're the ones who would be encountering the problems (and fixing them)</p>



<a name="170638335"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638335" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638335">(Jul 11 2019 at 14:30)</a>:</h4>
<p>I guess the NLL migrate borrowck currently emits (stern) warnings about things that might actually be weaponizable</p>



<a name="170638351"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638351" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638351">(Jul 11 2019 at 14:30)</a>:</h4>
<p>so okay, I'm not going to fight this.</p>



<a name="170638385"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638385" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638385">(Jul 11 2019 at 14:31)</a>:</h4>
<p>so &gt; does not crash and will probably generate a corrupted binary.</p>
<p>does that mean it might lead to unsoundness?</p>



<a name="170638414"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638414" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638414">(Jul 11 2019 at 14:31)</a>:</h4>
<p>let me actually put up the link with title and emojis for people to click</p>



<a name="170638416"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638416" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638416">(Jul 11 2019 at 14:31)</a>:</h4>
<p>I guess I think my take is that, if we had a lot of people around, it seems ok, but in the meantime I think it's ok to issue a warning. Messing around with things like PGO (to me) and linker behavior is fairly low level hackery and it is possible for things to go wrong.</p>



<a name="170638451"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638451" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638451">(Jul 11 2019 at 14:31)</a>:</h4>
<p>last beta nom: "Emit warning when trying to use PGO in conjunction with unwinding on [Windows]" <a href="https://github.com/rust-lang/rust/issues/61853" target="_blank" title="https://github.com/rust-lang/rust/issues/61853">#61853</a></p>



<a name="170638504"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638504" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638504">(Jul 11 2019 at 14:32)</a>:</h4>
<p><span class="user-mention" data-user-id="116009">@nikomatsakis</span> but how wrong are we talking?</p>



<a name="170638565"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638565" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638565">(Jul 11 2019 at 14:32)</a>:</h4>
<p>if it justs leads to a crash and not UB then fine</p>



<a name="170638643"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638643" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638643">(Jul 11 2019 at 14:33)</a>:</h4>
<p>I don't know exactly</p>



<a name="170638671"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638671" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638671">(Jul 11 2019 at 14:33)</a>:</h4>
<p>Maybe a good idea at minimum is to update the text on <a href="https://github.com/rust-lang/rust/issues/61002" target="_blank" title="https://github.com/rust-lang/rust/issues/61002">https://github.com/rust-lang/rust/issues/61002</a></p>



<a name="170638721"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638721" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638721">(Jul 11 2019 at 14:33)</a>:</h4>
<p>there is bug connected to a old versions of GNU ld we discussed during pre-triage that one might put in a similar boat, in terms of asking "what is our obligation when it comes to linker issues"</p>



<a name="170638736"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638736" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638736">(Jul 11 2019 at 14:34)</a>:</h4>
<p>So I'd like to be sure that this won't lead to unsoundness at least, which I would not be fine with</p>



<a name="170638738"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638738" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638738">(Jul 11 2019 at 14:34)</a>:</h4>
<p>In the meantime, I expect mw will investigate this in more detail when they return from leave in ... 4 weeks or so</p>



<a name="170638778"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638778" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638778">(Jul 11 2019 at 14:34)</a>:</h4>
<p>Is it possible to just move the check later in the compilation process? EricRahm says the issue is that the error is being emitted too eagerly ie even when they're not asking rustc to actually do PGO <a href="https://github.com/rust-lang/rust/issues/61002#issuecomment-500075739" target="_blank" title="https://github.com/rust-lang/rust/issues/61002#issuecomment-500075739">https://github.com/rust-lang/rust/issues/61002#issuecomment-500075739</a></p>



<a name="170638803"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638803" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638803">(Jul 11 2019 at 14:34)</a>:</h4>
<p>It may be</p>



<a name="170638904"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170638904" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170638904">(Jul 11 2019 at 14:35)</a>:</h4>
<p>but then again I assume EricRahm is fine with the current "solution" under discussino since they authored it?</p>



<a name="170639025"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639025" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639025">(Jul 11 2019 at 14:36)</a>:</h4>
<p>We can make a decision (one way or the other) right now. Or we can say "lets delay until next week", but <span class="user-mention" data-user-id="116009">@nikomatsakis</span> and I will both be absent then. Is that okay?</p>



<a name="170639090"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639090" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639090">(Jul 11 2019 at 14:37)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span> so if you do "use PGO in conjunction with unwinding on Windows" and actually use PGO you'd get an error?</p>



<a name="170639106"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639106" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639106">(Jul 11 2019 at 14:37)</a>:</h4>
<p>it seems like we should probably investigate at least a tiny bit more before we approve for backport. Is someone here willing to take point on that investigation in the absence of myself and <span class="user-mention" data-user-id="116009">@nikomatsakis</span> ?</p>



<a name="170639125"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639125" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639125">(Jul 11 2019 at 14:37)</a>:</h4>
<p>I feel a distinct lack of information to say I'm fine</p>



<a name="170639132"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639132" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639132">(Jul 11 2019 at 14:37)</a>:</h4>
<p><span class="user-mention" data-user-id="126931">@centril</span> Yeah.</p>



<a name="170639168"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639168" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639168">(Jul 11 2019 at 14:37)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span>  oh; well in that case if there's an error later in compilation then it cannot be a problem in terms of soundness and whatnot?</p>



<a name="170639263"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639263" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639263">(Jul 11 2019 at 14:38)</a>:</h4>
<blockquote>
<p>Is someone here willing to take point on that investigation in the absence of myself and @nikomatsakis ?</p>
</blockquote>
<p>(if I don't see any takers on this question, then I feel pressured to make a decision, one way or the other, right now...)</p>



<a name="170639266"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639266" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639266">(Jul 11 2019 at 14:38)</a>:</h4>
<p>If we can find an alternate fix, that's great. Maybe we can move the check and make it more precise. I'd like it if we identified who will investigate, though.</p>



<a name="170639306"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639306" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639306">(Jul 11 2019 at 14:39)</a>:</h4>
<p><span class="user-mention" data-user-id="125250">@Wesley Wiser</span> would you like to take it on perhaps?</p>



<a name="170639324"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639324" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Wesley Wiser <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639324">(Jul 11 2019 at 14:39)</a>:</h4>
<p>I can do some investigation and try to report back next week with my findings.</p>



<a name="170639330"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639330" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639330">(Jul 11 2019 at 14:39)</a>:</h4>
<p>(or maybe <span class="user-mention" data-user-id="121053">@varkor</span> since they reviewed the original PR ... )</p>



<a name="170639338"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639338" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639338">(Jul 11 2019 at 14:39)</a>:</h4>
<p>I'll ping Eric to try and get a contact who might have more info from FF</p>



<a name="170639340"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639340" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639340">(Jul 11 2019 at 14:39)</a>:</h4>
<p>okay, great, thanks <span class="user-mention" data-user-id="125250">@Wesley Wiser</span> !</p>



<a name="170639528"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639528" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639528">(Jul 11 2019 at 14:42)</a>:</h4>
<p>okay, we have five <a href="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3AI-nominated+label%3AT-compiler" target="_blank" title="https://github.com/rust-lang/rust/issues?utf8=%E2%9C%93&amp;q=is%3Aopen+label%3AI-nominated+label%3AT-compiler">nominated issues</a> but only 4 minutes before I promised <span class="user-mention" data-user-id="116015">@Alex Crichton</span> a chance to speak. :)</p>



<a name="170639550"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639550" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639550">(Jul 11 2019 at 14:42)</a>:</h4>
<p>nominated: "ICE: thread 'rustc' panicked at 'capacity overflow'" <a href="https://github.com/rust-lang/rust/issues/62554" target="_blank" title="https://github.com/rust-lang/rust/issues/62554">#62554</a></p>



<a name="170639554"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639554" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639554">(Jul 11 2019 at 14:42)</a>:</h4>
<p>I only nominated this so people are aware I tagged it as P-medium. :)</p>



<a name="170639565"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639565" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639565">(Jul 11 2019 at 14:42)</a>:</h4>
<p>if you think it should be P-high, speak up.</p>



<a name="170639573"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639573" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639573">(Jul 11 2019 at 14:42)</a>:</h4>
<p>(preferably on issue)</p>



<a name="170639599"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639599" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639599">(Jul 11 2019 at 14:43)</a>:</h4>
<p>next: "1.30 -&gt; 1.31 dylib late-binding regression with GNU binutils 2.28 or older." <a href="https://github.com/rust-lang/rust/issues/61539" target="_blank" title="https://github.com/rust-lang/rust/issues/61539">#61539</a></p>



<a name="170639611"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639611" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639611">(Jul 11 2019 at 14:43)</a>:</h4>
<p>this is the bug I mentioned up above with things with GNU linker versions</p>



<a name="170639626"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639626" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639626">(Jul 11 2019 at 14:43)</a>:</h4>
<p>I nominated it to raise awareness of this <a href="https://github.com/rust-lang/rust/issues/61539#issuecomment-510497134" target="_blank" title="https://github.com/rust-lang/rust/issues/61539#issuecomment-510497134">stray thought</a></p>



<a name="170639683"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639683" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639683">(Jul 11 2019 at 14:44)</a>:</h4>
<p>namely, the idea of using dynamic linker version detect " just to drive the emission of a diagnostic warning. Where said diagnostic tells people to take one of the aforementioned steps to work around the bug."</p>



<a name="170639693"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639693" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639693">(Jul 11 2019 at 14:44)</a>:</h4>
<p>I wanted to take peoples temperature about that idea.</p>



<a name="170639707"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639707" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639707">(Jul 11 2019 at 14:44)</a>:</h4>
<p>But again, please feel free to respond on ticket, we don't have to do it live here.</p>



<a name="170639778"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639778" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639778">(Jul 11 2019 at 14:45)</a>:</h4>
<p>Well, the warning message based on just linker version would lead to false positives more often than not, but I don’t know of any other solution that’s not reenabling plt by default.</p>



<a name="170639779"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639779" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639779">(Jul 11 2019 at 14:45)</a>:</h4>
<p>next, I nominated "Creating a recursive type with infinite size leads to internal compiler error" <a href="https://github.com/rust-lang/rust/issues/61323" target="_blank" title="https://github.com/rust-lang/rust/issues/61323">#61323</a> in hopes of finding someone other than niko to look into it</p>



<a name="170639930"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639930" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639930">(Jul 11 2019 at 14:46)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span> is there particular pattern of codegen we could associate the diagnostic with, to try to lower the false positive rate?</p>



<a name="170639968"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170639968" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170639968">(Jul 11 2019 at 14:46)</a>:</h4>
<p>Or is it basically going to happen all the time?</p>



<a name="170640014"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640014" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640014">(Jul 11 2019 at 14:47)</a>:</h4>
<p>Maybe? Ultimately to trigger that particular bug a dynamic library needs to be loaded at runtime (via e.g. dlopen)</p>



<a name="170640029"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640029" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640029">(Jul 11 2019 at 14:47)</a>:</h4>
<p>mmm</p>



<a name="170640034"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640034" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640034">(Jul 11 2019 at 14:47)</a>:</h4>
<p>okay</p>



<a name="170640099"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640099" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640099">(Jul 11 2019 at 14:48)</a>:</h4>
<p>Most relevant case where this almost always happen are compiler plugins</p>



<a name="170640128"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640128" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640128">(Jul 11 2019 at 14:48)</a>:</h4>
<p>two other nominations; "Add a "diagnostic item" scheme for lints referring to libstd items" <a href="https://github.com/rust-lang/rust/issues/60966" target="_blank" title="https://github.com/rust-lang/rust/issues/60966">#60966</a> (is, according to <span class="user-mention" data-user-id="119009">@eddyb</span> , waiting on <span class="user-mention" data-user-id="124288">@oli</span> , who is on vacation for another week).  and "Stable rustc always panics on arm/musl" <a href="https://github.com/rust-lang/rust/issues/60297" target="_blank" title="https://github.com/rust-lang/rust/issues/60297">#60297</a> is <em>still</em> looking for some love</p>



<a name="170640145"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640145" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640145">(Jul 11 2019 at 14:48)</a>:</h4>
<p><span class="user-mention" data-user-id="123586">@nagisa</span>  oh yeah I even forgot how rare this is</p>



<a name="170640170"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640170" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640170">(Jul 11 2019 at 14:49)</a>:</h4>
<p>(does anyone here have access to arm/musl?  Hey <span class="user-mention" data-user-id="116015">@Alex Crichton</span> , do you? want to do some rustc hacking for us?)</p>



<a name="170640194"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640194" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640194">(Jul 11 2019 at 14:49)</a>:</h4>
<p>Heh I do not outside of qemu emulation</p>



<a name="170640210"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640210" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640210">(Jul 11 2019 at 14:49)</a>:</h4>
<p>that seems as good a segue as any to a checkin from WG-pipelining, take it away <span class="user-mention" data-user-id="116015">@Alex Crichton</span></p>



<a name="170640222"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640222" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nagisa <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640222">(Jul 11 2019 at 14:49)</a>:</h4>
<p>(10 mins left)</p>



<a name="170640236"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640236" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640236">(Jul 11 2019 at 14:50)</a>:</h4>
<p>ok! so the general tracking issue is still at <a href="https://github.com/rust-lang/rust/issues/60988" target="_blank" title="https://github.com/rust-lang/rust/issues/60988">https://github.com/rust-lang/rust/issues/60988</a></p>



<a name="170640303"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640303" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640303">(Jul 11 2019 at 14:50)</a>:</h4>
<p>and everything is set enough that I've been proposing stabilizing the pieces in rustc so we can stabilize the support in Cargo</p>



<a name="170640314"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640314" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640314">(Jul 11 2019 at 14:50)</a>:</h4>
<p>and get it all out to everyone by default</p>



<a name="170640324"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640324" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640324">(Jul 11 2019 at 14:50)</a>:</h4>
<p>that requires two sub-issues to be stabilized</p>



<a name="170640356"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640356" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640356">(Jul 11 2019 at 14:50)</a>:</h4>
<p>one is <a href="https://github.com/rust-lang/rust/issues/60987#issuecomment-509310492" target="_blank" title="https://github.com/rust-lang/rust/issues/60987#issuecomment-509310492">https://github.com/rust-lang/rust/issues/60987#issuecomment-509310492</a>, where a <code>--json</code> flag is proposed to replace <code>--json-rendered</code> and it takes a list of arguments of what to print</p>



<a name="170640364"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640364" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640364">(Jul 11 2019 at 14:50)</a>:</h4>
<p>(and various configurations and whatnot)</p>



<a name="170640424"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640424" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640424">(Jul 11 2019 at 14:51)</a>:</h4>
<p>The next is <a href="https://github.com/rust-lang/rust/issues/60419#issuecomment-502228173" target="_blank" title="https://github.com/rust-lang/rust/issues/60419#issuecomment-502228173">https://github.com/rust-lang/rust/issues/60419#issuecomment-502228173</a> which is stabilizing the fact that JSON notifications come out for artifacts when you compile rustc and turn on json messages</p>



<a name="170640438"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640438" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640438">(Jul 11 2019 at 14:51)</a>:</h4>
<p>would <code>--json</code> imply JSON output without any other flags?</p>



<a name="170640444"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640444" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640444">(Jul 11 2019 at 14:51)</a>:</h4>
<p>it's worth pointing out that there is a <a href="https://github.com/rust-lang/rust/issues/60987#issuecomment-509310499" target="_blank" title="https://github.com/rust-lang/rust/issues/60987#issuecomment-509310499">pending FCP proposal</a> and <span class="user-mention" data-user-id="116466">@Zoxc</span>, <span class="user-mention" data-user-id="119031">@Esteban Küber</span>, <span class="user-mention" data-user-id="123586">@nagisa</span>, <span class="user-mention" data-user-id="124288">@oli</span>, <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span>, and <span class="user-mention" data-user-id="121053">@varkor</span> still pending</p>



<a name="170640451"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640451" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640451">(Jul 11 2019 at 14:52)</a>:</h4>
<p>(because that would probably be neat)</p>



<a name="170640492"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640492" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640492">(Jul 11 2019 at 14:52)</a>:</h4>
<p>in that latter issue in the discussion it was brought up that a <code>-C</code> flag isn't really necessary and we can just infer from json output</p>



<a name="170640504"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640504" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640504">(Jul 11 2019 at 14:52)</a>:</h4>
<p><span class="user-mention" data-user-id="119009">@eddyb</span> perhaps eventually, but seems like a separable question</p>



<a name="170640527"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640527" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640527">(Jul 11 2019 at 14:52)</a>:</h4>
<p>but yes the main thing now is ticky boxes and I don't mind doing the legwork actually stabilizing support</p>



<a name="170640569"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640569" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640569">(Jul 11 2019 at 14:52)</a>:</h4>
<p>long-term there's more possibilities for pipelining still, but for now this is just focused on what we have working today becoming stable</p>



<a name="170640598"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640598" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640598">(Jul 11 2019 at 14:53)</a>:</h4>
<p>and that's all I've got for pipelining!</p>



<a name="170640605"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640605" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640605">(Jul 11 2019 at 14:53)</a>:</h4>
<p>I guess there are two pending proposals</p>



<a name="170640611"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640611" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640611">(Jul 11 2019 at 14:53)</a>:</h4>
<p>IMO one thing I'd be fine with is just increasing the amount of detail in the JSON output, and expect any consumers to adapt</p>



<a name="170640634"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640634" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640634">(Jul 11 2019 at 14:53)</a>:</h4>
<p>as an alternative to increasing amounts of configurability</p>



<a name="170640713"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640713" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640713">(Jul 11 2019 at 14:54)</a>:</h4>
<p>The <a href="https://github.com/rust-lang/rust/issues/60419#issuecomment-502228173" target="_blank" title="https://github.com/rust-lang/rust/issues/60419#issuecomment-502228173">second one </a>is waiting on <span class="user-mention" data-user-id="116466">@Zoxc</span>, <span class="user-mention" data-user-id="123586">@nagisa</span>, <span class="user-mention" data-user-id="123856">@Vadim Petrochenkov</span>, and <span class="user-mention" data-user-id="116083">@pnkfelix</span></p>



<a name="170640720"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640720" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640720">(Jul 11 2019 at 14:54)</a>:</h4>
<p>Seems like it'd be good to get something here out the door...</p>



<a name="170640784"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640784" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640784">(Jul 11 2019 at 14:55)</a>:</h4>
<p><code>-Z</code> flags need to go through rfcbot ?</p>



<a name="170640800"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640800" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640800">(Jul 11 2019 at 14:55)</a>:</h4>
<p>oh, the <del>PR</del> issue title is misleading!</p>



<a name="170640908"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640908" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640908">(Jul 11 2019 at 14:56)</a>:</h4>
<p>yeah sorry if anything is unclear let me know and I can try to clear it up!</p>



<a name="170640919"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170640919" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170640919">(Jul 11 2019 at 14:56)</a>:</h4>
<p>these were stabilization proposals on the tracking issue rather than creation of a new issue proposing stabilization</p>



<a name="170641100"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641100" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641100">(Jul 11 2019 at 14:58)</a>:</h4>
<p>I have a separate question -- there is a <a href="https://doc.rust-lang.org/rustc/index.html" target="_blank" title="https://doc.rust-lang.org/rustc/index.html">rustc guide</a> that documents how to use rustc -- not to be confused with the one that teaches you how to hack on rustc, we should fix that...</p>



<a name="170641133"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641133" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641133">(Jul 11 2019 at 14:59)</a>:</h4>
<p>does anybody know how complete that is or whether it's maintained?</p>



<a name="170641188"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641188" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641188">(Jul 11 2019 at 14:59)</a>:</h4>
<p>seems like a useful artifact</p>



<a name="170641217"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641217" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641217">(Jul 11 2019 at 14:59)</a>:</h4>
<p>(I was thinking that both PGO + pipelining would be nice things to document in there)</p>



<a name="170641290"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641290" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641290">(Jul 11 2019 at 15:00)</a>:</h4>
<p><span class="user-mention" data-user-id="116015">@Alex Crichton</span>  it seems like <span class="user-mention" data-user-id="119009">@eddyb</span>  and <span class="user-mention" data-user-id="116466">@Zoxc</span> both care to some degree about whether the flag for <a href="https://github.com/rust-lang/rust/issues/60419" target="_blank" title="https://github.com/rust-lang/rust/issues/60419">#60419</a> goes under <code>-C</code> or [ ... somewhere else  ...]</p>



<a name="170641291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> centril <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641291">(Jul 11 2019 at 15:00)</a>:</h4>
<p>(<a href="https://doc.rust-lang.org/rustc/lints/levels.html" target="_blank" title="https://doc.rust-lang.org/rustc/lints/levels.html">https://doc.rust-lang.org/rustc/lints/levels.html</a> should probably be moved partially to the reference)</p>



<a name="170641311"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641311" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641311">(Jul 11 2019 at 15:00)</a>:</h4>
<p>should we try to resolve that question right here, while people are present?</p>



<a name="170641322"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641322" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641322">(Jul 11 2019 at 15:00)</a>:</h4>
<p>I'd argue it should be called <code>rustc CLI</code>or even an outright manpage :P</p>



<a name="170641323"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641323" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641323">(Jul 11 2019 at 15:00)</a>:</h4>
<p><code>rustc guide</code> seems confusing</p>



<a name="170641339"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641339" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641339">(Jul 11 2019 at 15:00)</a>:</h4>
<p>I'm <span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span> on resolving questions now if we can</p>



<a name="170641342"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641342" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641342">(Jul 11 2019 at 15:00)</a>:</h4>
<p><span class="user-mention" data-user-id="116083">@pnkfelix</span> I prefer no flag, just add it to the JSON output by default</p>



<a name="170641362"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641362" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641362">(Jul 11 2019 at 15:01)</a>:</h4>
<blockquote>
<p><span class="user-mention silent" data-user-id="116083">pnkfelix</span> I prefer no flag, just add it to the JSON output by default</p>
</blockquote>
<p>yeah I found <span class="user-mention" data-user-id="116015">@Alex Crichton</span> 's <a href="https://github.com/rust-lang/rust/issues/60419#issuecomment-502229576" target="_blank" title="https://github.com/rust-lang/rust/issues/60419#issuecomment-502229576">response</a> to this suggestion confusing</p>



<a name="170641400"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641400" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641400">(Jul 11 2019 at 15:01)</a>:</h4>
<p>sorry to clarify, I'm fine with whatever, if someone feels strongly I'm happy to go that route</p>



<a name="170641406"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641406" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641406">(Jul 11 2019 at 15:01)</a>:</h4>
<p>I have no preference myself other than to get this stabilized</p>



<a name="170641415"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641415" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641415">(Jul 11 2019 at 15:01)</a>:</h4>
<p>why <em>wouldn't</em> we do what <span class="user-mention" data-user-id="119009">@eddyb</span> suggests?</p>



<a name="170641428"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641428" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641428">(Jul 11 2019 at 15:01)</a>:</h4>
<p>It has a higher risk of being a breaking change</p>



<a name="170641435"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641435" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641435">(Jul 11 2019 at 15:01)</a>:</h4>
<p>(also relevant for other JSON additions)</p>



<a name="170641446"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641446" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641446">(Jul 11 2019 at 15:01)</a>:</h4>
<p>just to make <code>--json</code> independently testable?</p>



<a name="170641449"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641449" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641449">(Jul 11 2019 at 15:02)</a>:</h4>
<p>if consumers of json output expect a particular structure</p>



<a name="170641504"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641504" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641504">(Jul 11 2019 at 15:02)</a>:</h4>
<p>but we don'</p>



<a name="170641515"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641515" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641515">(Jul 11 2019 at 15:02)</a>:</h4>
<p>don't even hav a <code>--json</code> flag right now, right?</p>



<a name="170641519"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641519" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641519">(Jul 11 2019 at 15:02)</a>:</h4>
<p>shouldn't they handle failure gracefully? I thought we've been adding stuff to it over the past couple years</p>



<a name="170641528"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641528" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641528">(Jul 11 2019 at 15:02)</a>:</h4>
<p>/me looks</p>



<a name="170641553"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641553" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641553">(Jul 11 2019 at 15:02)</a>:</h4>
<p>I'm just saying "higher risk", I'm not saying "something will break"</p>



<a name="170641567"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641567" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> eddyb <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641567">(Jul 11 2019 at 15:03)</a>:</h4>
<p>/me is probably overoptimistic tbh</p>



<a name="170641571"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641571" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Alex Crichton <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641571">(Jul 11 2019 at 15:03)</a>:</h4>
<p>we do not have <code>--json</code> now, no</p>



<a name="170641625"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641625" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641625">(Jul 11 2019 at 15:03)</a>:</h4>
<p>I do think we should feel free to add to the json</p>



<a name="170641630"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641630" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641630">(Jul 11 2019 at 15:03)</a>:</h4>
<p>However</p>



<a name="170641706"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641706" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641706">(Jul 11 2019 at 15:04)</a>:</h4>
<p>I also think we should avoid bikeshedding this to death =)</p>



<a name="170641718"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641718" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641718">(Jul 11 2019 at 15:04)</a>:</h4>
<p>oh maybe <em>I</em> misunderstood <span class="user-mention" data-user-id="119009">@eddyb</span> 's suggestion. I took it to mean that the change would be implied by the <code>--json</code> flag</p>



<a name="170641723"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641723" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641723">(Jul 11 2019 at 15:04)</a>:</h4>
<p>I also can't remember how much we've extended the json before :) at least sometimes, I think</p>



<a name="170641782"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641782" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641782">(Jul 11 2019 at 15:05)</a>:</h4>
<p>Okay well I'm going to officially say <span aria-label="shrug" class="emoji emoji-1f937" role="img" title="shrug">:shrug:</span>  and check off my box, as I need to go</p>



<a name="170641819"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641819" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641819">(Jul 11 2019 at 15:05)</a>:</h4>
<p>thanks to everyone in <span class="user-group-mention" data-user-group-id="897">@T-compiler/meeting</span> for attending!</p>



<a name="170641974"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170641974" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> pnkfelix <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170641974">(Jul 11 2019 at 15:07)</a>:</h4>
<p>(i do think <a href="#narrow/stream/131828-t-compiler/topic/json-rendered.20flag/near/169902136" title="#narrow/stream/131828-t-compiler/topic/json-rendered.20flag/near/169902136">the <code>--cargo=foo=bar</code> options</a> sounds like a good way to introduce functionality like this in the future)</p>



<a name="170642181"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170642181" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170642181">(Jul 11 2019 at 15:09)</a>:</h4>
<p>I think my take on the issue is that I like <span class="user-mention" data-user-id="119009">@eddyb</span>'s suggestion but I would be quite happy to stabilize what's there and then introduce a "grand unified mechanism" separately.</p>



<a name="170642257"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170642257" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> nikomatsakis <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170642257">(Jul 11 2019 at 15:10)</a>:</h4>
<p>And yes I sort of like having a "mid-way point" that lets us create explicitly temporary interfaces that can get "stabilized" separately</p>



<a name="170674004"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/131828-t-compiler/topic/weekly%20meeting%202019-07-11%20%2354818/near/170674004" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> njn <a href="https://rust-lang.github.io/zulip_archive/stream/131828-t-compiler/topic/weekly.20meeting.202019-07-11.20.2354818.html#170674004">(Jul 11 2019 at 21:24)</a>:</h4>
<p>Unfortunatey I will never be around for the meeting due to timezones :/</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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